<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>
<body>
    <div id="app">
        <input type="text" v-on:keyup.enter="submit">
    </div>

    <script>
        var vm = new Vue({
            el:'#app',
            methods:{
                submit () {
                    console.log('表单提交')
                }
            }
        })
    </script>
</body>
</html>